WORTHINGTON, Minn. (AP) — A southern Minnesota dairy farmer has asked a judge to lift a state embargo on the sale of raw milk food products from his farm.

Michael Hartmann argued in court Thursday that his Gibbon area farm is not the source of a recent E. coli outbreak.

The state Agriculture Department prohibited off-farm sales after health officials traced the outbreak which sickened eight people to the Hartmann farm.

The embargo prohibits Hartmann from transporting items like milk, cheese and butter to locations off the farm for sale. Customers can still buy food from Hartmann at his farm.

Minnesota Public Radio News reports Dakota County Judge Rex Stacey did not act on Hartmann's motion but did require the state to turn over certain test results.

Copyright 2010 The Associated Press.

For more information read: 5 people now sickened by raw milk in Minnesota